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Nef

//nɛf// adj, noun

Definitions

Adjective
  1. 1
    Of a line bundle on a complete algebraic variety over a field: such that the degree of its restriction to every algebraic curve in the variety is non-negative. not-comparable

    "[…] this condition is the numerical consequence of the condition that for some mgt;0, the linear system #124;mD#124; is effective and free; thus nef = "numerically (effective and free)"."

Noun
  1. 1
    An extravagant table ornament and container used in the Middle Ages and Renaissance, made in the shape of a ship.

Etymology

Etymology 1

Borrowed from French nef. Doublet of nave and nau.

Etymology 2

Short for numerically effective; introduced by Miles Reid.

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